<!DOCTYPE html>
<html xmlns = "http://www.w3.org/1999/xhtml" xmlns:th = "http://www.thymeleaf.org" 
   xmlns:sec = "http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">

   <head>
      <title>Hello World!</title>
   </head>
   <body>
      <h1 th:inline = "text">您好，[[${#httpServletRequest.remoteUser}]]!</h1>
      <form th:action = "@{/logout}" method = "post">
         <input type = "submit" value = "注销"/>
      </form>
   </body>

</html>